This segment of the Most Interesting APIs in 2018 includes all APIs encompassing Business and Productivity that made our list. We focus on APIs that streamline and improve business processes, and new technology that can be integrated that may transform how a company or organization does business.

Eleven APIs have been added to the ProgrammableWeb directory in several categories including Tourism, Water, and Payments. One highlight today is the Continuum Connect API, which provides useful data for creating financial trading applications. Here's a rundown of the latest additions.

Rebel is known for its interactive emails. But, developers had asked for Rebel to launch an API that allowed them to build emails with JSON (same process as Rebel Actionable API) without the need for interactive functionality. In response, Rebel has launched the Rebel Lite API.